Abstract: Gutters and downspouts on buildings such as home conventionally communicate with drain lines for the disposal of rain water. The drain lines are sometimes connected with sewers by way of a footer drain around the foundation of the building and sometimes communicate with dry wells adjacent the building. A problem with all such downspout drainage systems is that particulate material such as leaves, small pieces of roofing and other kinds of debris tend to enter the system through the downspouts. The material accumulates in the drainage lines including the footer drains around the foundation and often fills up the dry wells with the undesirable result of storm water being introduced into the basement of the building and the resultant damage to articles in the basement as well as the foundation walls and basement floors. These problems can be eliminated by preventing the debris from entering the footer drains and/or dry wells and the downspout trap and clean out of the present invention eliminates the problem.